Results 31 to 40 of about 13,872,756 (390)
Vitamin B-12 is a cofactor for 2 enzymes. In the cytoplasm, methionine synthase requires vitamin B-12 in the form of methylcobalamin and catalyzes the conversion of homocysteine to methionine by transfer of a methyl group from methyltetrahydrofolate. This enzyme links the methylation pathway through synthesis of the methyl donor S-adenosyl methionine ...
openaire +3 more sources
B vitamins and cognitive performance in older adults: Review [PDF]
A copious amount of scientific scrutiny has been dedicated to documenting typical and atypical human ageing, with a substantial body of work focusing upon the impact of lifestyle choices.
Reay, Jonathon+2 more
core +3 more sources
Background: DNA methylation patterns are directly associated with diverse metabolic disorders. The status of methyl-donor micronutrients has been associated with DNA methylation levels, and altered ingestion of folate, choline, betaine, B vitamins and ...
Jhulia Caroline N.L. da Mota+7 more
doaj +1 more source
Which circulating antioxidant vitamins are confounded by socioeconomic deprivation? The MIDSPAN family study [PDF]
<p><b>Background:</b> Antioxidant vitamins are often described as having “independent” associations with risk of cancer, cardiovascular disease (CVD) and mortality.
Alex McConnachie+35 more
core +4 more sources
Background: Both ginsenoside Re and B-complex vitamins are widely used as nutritional supplements. They are often taken together so as to fully utilize their antifatigue and refreshing effects, respectively.
Yin Bin Chen+8 more
doaj +1 more source
Two experiments were conducted to determine the stability of microencapsulated and non-microencapsulated forms of vitamins in diets during extrusion and pelleting. We investigated the recovery of vitamins in swine diets after extrusion at 100 °C, 140 °C,
Pan Yang+3 more
doaj +1 more source
Stroke: roles of B vitamins, homocysteine and antioxidants [PDF]
19 páginas, 1 figura, 2 tablas.In the present review concerning stroke, we evaluate the roles of B vitamins, homocysteine and antioxidant vitamins. Stroke is a leading cause of death in developed countries.
Diez, Elena+6 more
core +1 more source
Urinary excretion of B-group vitamins reflects the nutritional status of B-group vitamins in rats
We have reported previously that the urinary excretion of B-group vitamins reflects recent dietary intakes of these vitamins. We also proposed reference values for the urinary levels of B-group vitamins for human subjects, and used these for evaluating ...
Katsumi Shibata+3 more
doaj +1 more source
Observational studies regarding the putative associations between dietary intake of homocysteine metabolism-related B-vitamins (vitamin B-6, folate, and vitamin B-12) and stroke risk have yielded inconsistent results. Thus, we conducted a systematic meta-
Liyun Chen+5 more
semanticscholar +1 more source
Does taking vitamin, mineral and fatty acid supplements prevent cognitive decline? A systematic review of randomized controlled trials [PDF]
Background Observational studies have shown associations between nutritional status and cognition in later life but evidence from intervention studies is unclear.
Avenell, Alison, Jia, X, McNeill, G
core +1 more source